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Viewing changes to bzrlib/upgrade.py

Give a reasonable warning on attempts to upgrade a readonly url.

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bzrlib/upgrade.py
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import sys
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import shutil
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from bzrlib.atomicfile import AtomicFile
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from bzrlib.branch import Branch, find_branch
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from bzrlib.branch import BZR_BRANCH_FORMAT_5, BZR_BRANCH_FORMAT_6
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from bzrlib.branch import BzrBranchFormat4, BzrBranchFormat5, BzrBranchFormat6
 
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from bzrlib.errors import UpgradeReadonly
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import bzrlib.hashcache as hashcache
 
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from bzrlib.osutils import sha_strings, sha_string, pathjoin, abspath
 
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from bzrlib.ui import ui_factory
 
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from bzrlib.trace import mutter, note, warning
 
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from bzrlib.transport import get_transport
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from bzrlib.weave import Weave
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from bzrlib.weavefile import read_weave, write_weave
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from bzrlib.ui import ui_factory
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from bzrlib.atomicfile import AtomicFile
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from bzrlib.xml4 import serializer_v4
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from bzrlib.xml5 import serializer_v5
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from bzrlib.trace import mutter, note, warning
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from bzrlib.osutils import sha_strings, sha_string, pathjoin, abspath
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class Convert(object):
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    def __init__(self, base_dir):
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        self.base = base_dir
 
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    def __init__(self, transport):
 
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        self.base = transport.base
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        self.converted_revs = set()
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        self.absent_revisions = set()
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        self.text_count = 0
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        self.revisions = {}
 
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        self.transport = transport
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        self.convert()
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    def convert(self):
 
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        if self.transport.is_readonly():
 
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            raise UpgradeReadonly
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        if not self._open_branch():
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            return
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        note('starting upgrade of %s', os.path.abspath(self.base))
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        inv_wf.close()
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def upgrade(base_dir):
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    Convert(base_dir)
 
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def upgrade(url):
 
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    t = get_transport(url)
 
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    Convert(t)